Faster k-SAT algorithms using biased-PPSZ

TD Hansen, H Kaplan, O Zamir, U Zwick - Proceedings of the 51st …, 2019 - dl.acm.org
The PPSZ algorithm, due to Paturi, Pudlak, Saks and Zane, is currently the fastest known
algorithm for the k-SAT problem, for every k> 3. For 3-SAT, a tiny improvement over PPSZ …

PPSZ is better than you think

D Scheder - TheoretiCS, 2024 - theoretics.episciences.org
PPSZ, for long time the fastest known algorithm for 𝑘-SAT, works by going through the
variables of the input formula in random order; each variable is then set randomly to 0 or 1 …

On super strong ETH

N Vyas, R Williams - Journal of Artificial Intelligence Research, 2021 - jair.org
Multiple known algorithmic paradigms (backtracking, local search and the polynomial
method) only yield a 2 n (1-1/O (k)) time algorithm for k-SAT in the worst case. For this …

Some open problems in fine-grained complexity

VV Williams - ACM SIGACT News, 2018 - dl.acm.org
Fine-grained complexity studies problems that are" hard" in the following sense. Consider a
computational problem for which existing techniques easily give an algorithm running in a …

Super strong ETH is true for PPSZ with small resolution width

D Scheder, N Talebanfard - 35th Computational Complexity …, 2020 - eprints.whiterose.ac.uk
We construct k-CNFs with m variables on which the strong version of PPSZ k-SAT algorithm,
which uses resolution of width bounded by O (√{log log m}), has success probability at most …

Faster Random -CNF Satisfiability

A Lincoln, A Yedidia - arXiv preprint arXiv:1903.10618, 2019 - arxiv.org
We describe an algorithm to solve the problem of Boolean CNF-Satisfiability when the input
formula is chosen randomly. We build upon the algorithms of Sch {\"{o}} ning 1999 and …

Hard satisfiable formulas for splittings by linear combinations

D Itsykson, A Knop - International Conference on Theory and Applications …, 2017 - Springer
Itsykson and Sokolov in 2014 introduced the class of DPLL (⊕) algorithms that solve
Boolean satisfiability problem using the splitting by linear combinations of variables modulo …

Satisfiability Algorithms and Connections between Algorithms and Circuit Lower Bounds

N Vyas - 2023 - dspace.mit.edu
In this thesis we study satisfiability algorithms and connections between algorithms and
circuit lower bounds. We give new results in the following three areas: Oracles and …

Results on a super strong exponential time hypothesis

N Vyas, R Williams - Proceedings of the AAAI Conference on Artificial …, 2020 - ojs.aaai.org
All known SAT-solving paradigms (backtracking, local search, and the polynomial method)
only yield a 2 n (1− 1/O (k)) time algorithm for solving k-SAT in the worst case, where the big …

Super Strong ETH is False for Random -SAT

N Vyas - arXiv preprint arXiv:1810.06081, 2018 - arxiv.org
It has been hypothesized that $ k $-SAT is hard to solve for randomly chosen instances near
the" critical threshold", where the clause-to-variable ratio is $2^ k\ln 2-\theta (1) $. Feige's …